Since, money is super tight, I ordered the cheapest one which is about $24.00 a month. The good thing though, is that it's a month to month rental and we are not in a contract or anything. So if we don't like it we can just send it right back!
Yes, I have thought about the chances that if I can't get it to work right and I start freaking out thinking there's no heartbeat! However, I'm hoping it will be smooth sailing and I'm able to figure it out okay! It's just so long between appointments that it will be nice to be able to hear LM's heartbeat whenever we want. I've been such a spaz lately about all the things that could go wrong, so to have this doppler it might help ease those worries.
It should be here next week! :)